Adapter for converting a single shot firearm into a two-shot repeater



y 30, 1968 Q H. M. OROZCO 3,394,481

ADAPTER FOR CONVERTING A SINGLE SHOT FIREARM INTO A TWO-SHOT REPEATER Filed Aug. 29, 1966 3 Sheets-Sheet l Inventor Hecfor Mendoza Orozco.

y y M Attorneys.

' July 30, 1968 H. M. OROZCO 3,394,481

ADAPTER FOR CONVERTING A SINGLE SHOT FIREARM INTO A TWO-SHOT REPEATER Filed Aug. 29, 1966 5 Sheets-Sheet 2 lnvenfor Hecfor Mendoza Orozco.

Afforneys.

J y .1968 V H. M. OROZCO 3,394,481

ADAPTER FOR CONVERTING A SINGLE SHOT FIREARM INTO A TWO-SHOT REPEATER Filed Aug. 29, 1966 3 Sheets-Sheet 5 Inventor Hector Mendoza Orozco.

Afforneys.

United States Patent 3,394,481 ADAPTER FOR CONVERTING A SINGLE SHOT FIREARM INTO A TWO-SHOT REPEATER Hector Mendoza Orozco, Bartolache 1914, Mexico City, Mexico Filed Aug. 29, 1966, Ser. No. 575,805 Claims priority, application Mexico, Apr. 30, 1966,

3 Claims. for. 42-17 ABSTRACT OF THE DISCLOSURE A single shot, bolt action firearm having an adapter by means of which :a spare cartridge is releasably held in readiness for automatic delivery into the breech of the firearm incidental to ope-ration of the bolt. The adapter is a clamp mounted on the bolt, the receiver or the stock of the firearm.

The popular repeating firearms employing 2 to 17 cartridges reach a fairly high production cost whereas the less expensive single shot, bolt action firearms do not find great acceptance in regard to hunting or sport shooting nowadays.

In other words, due to the long time required for ejecting the empty shell of the cartridge just fired by rearwardly operating the bolt handle, dropping the new cartridge into the receiver and actuating the bolt in the opposite direction to chamber the new round, the utility of the single shot gun is limited.

Thus, it is an object of the present invention to provide an economical device which may be attached to single shot guns for modifying the functioning thereof so as to provide an additional round ready to be fired apart from the one lodged in the breech of the barrel of such gun.

In other words, the present invention is directed to a device for converting a single shot bolt action gun into a two shot repeater which enables the shooter to make double shot sequences.

It is intended that these objects be accomplished by providing the receiver of the gun with a ring or clamp which will hold the extra cartridge against the bolt so that when the bolt is operated backward the clamp quits the support to this cartridge and allows the cartridge to fall into the receiver by inertia or by its own weight.

It must be understood that such preferred modality of invention may be substituted by other means or variations mentioned along the present description and that said preferred modality, so as those possible variations, are useful in single shot firearms of any caliber or type.

The foregoing and other objects of the invention not specifically enumerated will be readily understood from the detailed description which follows, when considered in connection with the accompanying drawings herein:

FIG. 1 illustrates a conventional perspective view of the receiver of a firearm that incorporates the present invention in one of the preferred modalities;

FIGS. 1A and 1B illustrate a modified form of adapter;

FIG. 2 is also a perspective conventional view of the firearm receiver, illustrating another modality of the invention adapted to the bolts back;

FIG. 3 is a perspective view of the firearm receiver adapted to the stock, which shows a further variant of the invention;

FIG. 4 illustrates an additional perspective view of the firearm receiver, showing the modality of the invention described in FIG. 1 in operation; and

FIG. 5 illustrates another perspective conventional view of the receiver of a firearm, showing in operation the modality of the invention described in FIG. 2.

The firearm selected to illustrate and describe the present invention is a conventional .22 caliber bolt action rifle.

Referring to the drawings, the illustrated rifle comprises a receiver 1 which is an extension of the barrel 2 and to which the adapter of this invention is applied. The adapter is in the form of clamp means having a stamped and tempered steel resilient body portion 3 and an end portion 4 for supporting the extra cartridge 5 against the bolt 6, the bolt being provided with the usual manipulator or bolt lever 7.

A modification is shown in FIG. 1A wherein the adapter comprises a resilient body portion 8 fixed at one end to the receiver by means of screws received in the openings 9 and having a wide spoon like end portion 10 to hold the extra cartridge, in order to be fed when the bolt goes back. A cross sectional view AA of the spoon like end portion 10 is illustrated in FIG. 1B. The functioning of these devices is illustrated in FIG. 4, in which it will be seen that subsequent to the ejection of the burned cartridge case 13 and incidental to further retraction of the bolt 6, the supply round 5 will be released to fall into the receiver for projection into the breech by homeward movement of the bolt.

The adapter may also be applied directly to the bolt as is illustrated in FIG. 2. In the form shown, the adapter comprises a pair of wire ears 14 suitably attached to the bolt and adapted to clamp the spare cartridge 16 therebetween. When the bolt 6 is retracted, the ears are received in the slots 15 while the spare cartridge remains in engagement with the shoulder 15 to allow the spare cartridge to fall into the receiver just an instant after the burned cartridge case has been ejected.

The functioning of the modification of FIG. 2 can be clearly understood by studying FIG. 5 which shows the bolt 6 in the middle of its back stroke and the wires 14 partially received in the slots 15 so that the spare cartridge is in the process of being release-d to fall into the receiver.

The stock mounted modification shown in FIG. 3 comprises a resilient body portion 20 having an aperture at one end for receiving a fastener engaged in the recess 21. The recess is formed in the face of the cut out 17 formed in the stock 18 adjacent to the receiver 1. The opposite end of the body 20 is in the form of a U-shaped finger 19 having an end portion 4 joined to the body 20 by the U-shaped portion and opposed to the bolt 6 to support the extra cartridge against the bolt 6 in such a way that when the bolt is retracted such extra cartridge is deposited in the interior of the receiver, immediately after ejecting the empty case of the fired cartridge.

Although the foregoing description, in conjunction with the accompanying drawings, describes certain preferred forms of the invention, it is to be understood that changes in details may be resorted to within the range of firearms skill, without departing from the spirit of the invention as hereinafter claimed.

What I claim is:

1. In a bolt action single shot firearm of the type having a receiver portion provided with an access opening, a barrel, and a breech bolt of conventional type, the breech 'bolt being movable between a firing position against said barrel closing said access opening and a fully retracted position, the breech bolt having an intermediate position at which an end portion of the breech bolt is exposed through said access opening and at which intermediate position a spent cartridge is ejected through said access opening, the improvement comprising:

clamp means for automatically feeding a spare cartridge into said receiver through said access opening thereof, said clamp means including a resilient body portion attached to the receiver portion of said firearm and having an end portion for clamping the cartridge against the breech bolt, said end portion contacting said cartridge along its length in generally diametrically opposed relation to the contact between said breech bolt and said cartridge and said end portion engaging the cartridge to an extent which, between the extremes of any circumferential contact between the end portion and the cartridge, is materially less than 180 whereby the clamp means completely releases said spare cartridge to drop through said access opening in response to movement of said breech bolt beyond said intermediate position toward said fully retracted position.

UNITED STATES PATENTS 1,058,132 4/1913 Young.

FOREIGN PATENTS 456,184 6/1913 France.

BENJAMIN A. BORCHELT, Primary Examiner. 

